INTx_C/UINTx_C definitions result type

[Nicolas Joly <njoly%pasteur.fr@localhost>]

Hi,

I just noted that INTx_C/UINTx_C macros does not seems to return
costants of the specified `uint_leastx_t' type as expected ...

  7.18.4.1 Macros for minimum-width integer constants

1 The macro INTN_C(value) shall expand to an integer constant
  expression corresponding to the type int_leastN_t. The macro
  UINTN_C(value) shall expand to an integer constant expression
  corresponding to the type uint_leastN_t. For example, if
  uint_least64_t is a name for the type unsigned long long int, then
  UINT64_C(0x123) might expand to the integer constant 0x123ULL.

Actually only the smallest version (x < 32) suffers from this and
sizeof(INT8_C(0)) = 4 differs from sizeof(int_least8_t) = 1.

Any drawbacks to be expected with the following patch that adds casts
for the corresponding types ?

Thanks.

-- 
Nicolas Joly

Biological Software and Databanks.
Institut Pasteur, Paris.

Index: sys/arch/amd64/include/int_const.h
===================================================================
RCS file: /cvsroot/src/sys/arch/amd64/include/int_const.h,v
retrieving revision 1.4
diff -u -p -r1.4 int_const.h
--- sys/arch/amd64/include/int_const.h  29 May 2010 17:33:57 -0000      1.4
+++ sys/arch/amd64/include/int_const.h  5 Dec 2010 21:07:34 -0000
@@ -40,15 +40,15 @@
 
 /* 7.18.4.1 Macros for minimum-width integer constants */
 
-#define        INT8_C(c)       c
-#define        INT16_C(c)      c
-#define        INT32_C(c)      c
-#define        INT64_C(c)      c ## L
-
-#define        UINT8_C(c)      c
-#define        UINT16_C(c)     c
-#define        UINT32_C(c)     c ## U
-#define        UINT64_C(c)     c ## UL
+#define        INT8_C(c)       (int_least8_t)c
+#define        INT16_C(c)      (int_least16_t)c
+#define        INT32_C(c)      (int_least32_t)c
+#define        INT64_C(c)      (int_least64_t)(c ## L)
+
+#define        UINT8_C(c)      (uint_least8_t)c
+#define        UINT16_C(c)     (uint_least16_t)c
+#define        UINT32_C(c)     (uint_least32_t)(c ## U)
+#define        UINT64_C(c)     (uint_least64_t)(c ## UL)
 
 /* 7.18.4.2 Macros for greatest-width integer constants */